This past weekend, Guangzhou estimated more than a million people daily were leaving the city to race home for Lunar New Year, with nearly a fifth of passengers departing through Guangzhou Railway Station alone.

Follow SCMP multimedia reporter Hélène Franchineau as she tweets photos and the stories of two migrant workers who just returned from Shenzhen to their home in Henan.

On Monday this week, Guangzhou film director Zhou Hao dropped his latest documentary, Cop Shop, which offers the police view of the city's annual logistics challenge to send everyone home on time, online at Chinese video hosting site Youku. The hour-long film has since been posted to YouTube, so enjoy.